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observer: Add missing return codes

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Upon detecting the user error, supply an error code!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-08-30 15:17:41 +01:00
parent 70cd3b473d
commit 7df7964333
1 changed files with 4 additions and 4 deletions
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8
src/cairo-surface-observer.c
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@ -1825,10 +1825,10 @@ cairo_surface_observer_elapsed (cairo_surface_t *abstract_surface)
cairo_surface_observer_t *surface;
if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_surface->ref_count)))
return;
return -1;
if (! _cairo_surface_is_observer (abstract_surface))
return;
return -1;
surface = (cairo_surface_observer_t *) abstract_surface;
return _cairo_observation_total_elapsed_ns (&surface->log);
@ -1861,10 +1861,10 @@ cairo_device_observer_elapsed (cairo_device_t *abstract_device)
cairo_device_observer_t *device;
if (unlikely (CAIRO_REFERENCE_COUNT_IS_INVALID (&abstract_device->ref_count)))
return;
return -1;
if (! _cairo_device_is_observer (abstract_device))
return;
return -1;
device = (cairo_device_observer_t *) abstract_device;
return _cairo_observation_total_elapsed_ns (&device->log);